Put Myself in Your Shoes: Lifting the Egocentric Perspective from Exocentric Videos

Mi Luo*, Zihui Xue, Alex Dimakis, Kristen Grauman ;

"We investigate exocentric-to-egocentric cross-view translation, which aims to generate a first-person (egocentric) view of an actor based on a video recording that captures the actor from a third-person (exocentric) perspective. To this end, we propose a generative framework called Exo2Ego that decouples the translation process into two stages: high-level structure transformation, which explicitly encourages cross-view correspondence between exocentric and egocentric views, and a diffusion-based pixel-level hallucination, which incorporates a hand layout prior to enhance the fidelity of the generated egocentric view. To pave the way for future advancements in this field, we curate a comprehensive exo-to-ego cross-view translation benchmark focused on hand-object manipulations. It consists of a diverse collection of synchronized ego-exo video pairs from four public datasets: H2O, Aria Pilot, Assembly101, and Ego-Exo4D. The experimental results validate that Exo2Ego delivers photorealistic video results with clear hand manipulation details and outperforms several baselines in terms of both synthesis quality and generalization to new actions."